Silo elevator



@ai 9 R923. 15470292 E. SCHEUNERT SILO ELEVATOR 'Filed Sent. 30. 1922 2 SheeS-Sheet l A/ay/ /ffi/ @ein 23,

sin? vrom we lint itl EW'ALD SCHEUNERT,

QF SILVER CFL-EEK, VVSCONSN.

ELEVATOR.

Application cd September 3G, 19252.

To r/,ZZ 107mm i 22mg/ concern.'

Be it linown that l',` Ewan) Sciirnonnn'r, a, citizen ot' the 'United States, and resident of Silver Creek, in the county of Sheboygan, and State ot llliseonsin, have invented certain new and n linproveinents in Silo Elei"etorsg .o hereby declare that the iioilowin.' is a l5 and exact description ther oit'.

'lhis invention relates to silo elevators and is particularly directed to an elevator adapted for manual operation.

ln silos as heretofore constructed, it has heen the practice to provide a chute down which the ensilage is thrown, and to provide a ladder within the chute so that the operator may climb into the upper portion ot the silo. These ladders soon become e reniely slippery and atord an unsafe footing, resnlting in frequent accidents.

This invention is designed to overcome the ahove noted detects, and to provide an elevoting apparatus adapted to raise the operator to the desire position without, hownnneciV sarily complicating the construction ot the silo.

(lhjects ot this invention are to provide an elevator adapted to traveL in the usual silo chute down which ensilageY is thro wn, to provide an elevator which is inherently sate and niaf.' he `opeiated hy an unskilled person, to provide an elevator which inay he lolded against the side ot the chute when not in use so as to leave the chute unobstructed and to provide an elevator which is autoniatic in its locking action.` Y

Further objects are to provide an elevaH tor which niay he'constructed in a cheap and sin'iple manner7 which may be applied to silos with a n'rininnnn of alterations of such silos1 and to provide an elevator oi sturdy and rugged design.

An embodiment of the invention is shown tlie accompanying drawings, in which 1- injure l is a vertical sectional view thru a silo chute sliowing the elevator in its lowest position. i

Figure 2 is a` front view of the elevator.

Figure Bis a. transverse sectional view thru the chute and a portion of the silo. and illustratinga relative position occupied hy the elevator.

Figure l a vertical sectional view thru the chute showing the elevator in folded position.

Referring incre particularly to the draw- Seral No. 591,567.

ing, it will he seen that the silo l is provided with the usual chute, or passageway, 2, and that such passage way is separated troni the niain silo body hy removably positioned boards 8. Upon one ot the walls, such as the side wall l oit the chute, a pair oi brackets 5 and S are secured and carrybetween thein an elongated chain T, such chain parat leling the side wall 4 and being spaced thereroin a slight distance.

The elevator proper, or car, comprises a hack portion 8 which is positioned between the wall l and the chain 7, and has pivoted adjacent its lower end, a hase, or floor, 9. A linkrlO is pivotally joined to each of the outer corners or" the hase portion 9, and has its upper end pivotally joined to an interinodiate link ll. This intermediate link, at its upper end. is joined to a link l2 pivoted at 13 to the upper portion ot the hack 8 voiI tho elevator. Adjacent the upper portion of the haclr 8, a two part housing' leiis secured and projects forwardly troni such hack. rlhis cas ig' houses a sprocket wheel which is ri dly secured to a transverse shatt i6, such shaft having its end projecting outwardly heyond the casing'. d pair ot operating cranks l? and i8 are rigidly secured to the sylt externally oit the casing, as may loe seen troni Figures 2 and Il.

The sprocket wheel is provided with rugged teeth k19 which engage in the rela.- tively yheavy chain 17, such chain being' constrained to inove at all tiines adjacent the sprocket wheel hy means oit a pair or" enlarged hearing surfaces 2O and 2l formed upon the' haelt portion S (see` Figure l). 'lhe upper portion or' the back 8 is provided with an eyelet :22, to which is attached a counter weight cable` 23. This cable passes over a pulley 24 adjacent the upper portion of the chute9 and is secured to a counter weight 25 mounted externally of the chute. i if desired a suitable housing` 26 may heV provided tor the counter weight.

The elevator isequipped with a safety locking' device which comprises a pawl, or detent, 27a pivotally mounted at 28 upon the loody portion, and provided with a rig-id outwardly extending arm 29. This. pawl is adapted to engage the cha-in 7 between successive links and may, if desired, tit within a recessed portion formed in the enlarged part 2l oit the hack 8, as shown in Figure 1 A convenient way of constructing` this pawl, or detent, is shown in Figure 2, from which VVwarenJ it will be seen that the pawl 27 is provided with an operating, or rock, shaft 30, which carries adjacent its outer end the rigid arm 29. rlhis arm 29 is connected by means of a linlr 3l with the outer end 32 of a foot lever pivo'ed at 33 to the baclr of the elevator. The foot lever is moved into the position shown in Figure 2 with the pawl in locking engagement, under normal condition, by means of a spring 3e. However, the pawl may be moved out of engaged position by stepping upon the foot receiving portion 2,5 of the foot lever. Y'vhen this is done, the linli 3l moves upwa dly, thereby rocking the detent, or pawl, QT out of engagement with the chain 7.

The operation of lows 2-The operator the device is as folsteps upon the plat- .form 9 and releases the pawl 2T by placing his foot upon the foot receiving portion of the lever. it the Sametime lie grasps the cranks l? and 18 and rotates them, thereby causing the sprocket wheel to travel upv along the chain 7. which, Jin turn, elevates the apparatus. lf at any time he inadvertently removes his foot from the lever, as for example under fortuitous conditions, the lever will immediately move to the position shown in Figure 2, thereby causing vthe detent to loclr the device against downward motion, Then the elevator has reached its upper limit of travel, the operator removes his foot from the lever and the device is locked in position, Thereafter he may step into the upper portion of the silo and fold the elevator into the position shown in Figure l by pulling the pivotal portion S6 of the levers ll and l2 outwardly and forcing the platform, or base, 9 upwardly into the position shown. ln this way the elevatoris collapsed and caused to occupy a very small space with the platform 9 adjacent the wall ll-the supporting levers ll and l2 being out of the way adjacent the front and re'ar walls of the silo, thus leaving the chute free and unobstructed.

lt will be seen that a manually operable elevator has been provided for a silo in such a manner that the usual chute may be employed as the elevator shaft, in which a. collapsible elevatoris provided so as to leave the chute unobstructed when thefelevator is not in use, and in which adequate safety devices are provided.

Y be understood that the invention may ychain to lock the car lt will further be seen that an extremely simple and rugged elevator has been provided which may be simply and easily operated by an unskilled person, and which is composed of a r latively small number of parts. Y

Although one form of the invention has been described to considerable detail, it is to be em# several different forms, and is as set forth in bodied in therefore to be limited only the appended claims.

l claim.: Y

l. ln combination, a silo having an ensilage chute, and a collapsible elevator located and adapted to travel within said chute. j

2. ln combination, a silo having a walled ensilage chute, a chain securedadjacent its upper and lower ends to one of the walls of said chute, a car adapted to travel along said. cha-in, a sprocket wheel carried by said car and operatively engaging said chain, a pair of cranks rigidly associated with said sprocket wheel, a car including` a platform, means adapted to hold Ysaid platform in .n extended position or to permit said plat- 'orm to be rocked upwardly into a position closely adjacent the wall of said ensilage chute. Y

3. An elevator comprising a vertical chain secured adjacent its lower and upper ends in a fixed position, a car adapted to tra-vel along said chain, said car comprising a baclr portion mounted to the rear of said chain, a sprocket wheel mounted in front of said chain and operably engaging it, manual means for driving said wheel, aplatform having one end pivoted to said back portion, a. pair of llinks connectingv the upper portion of said back with theV outer portion of said platform and permitting said platform to occupy an extended position or a position adjacent said bach, a detent'carn ried by said car and normally engaging said fixed position, a foot lever operatively connected to said detent, and resilient means biasing said detentV to locking position.

In testimony that l claim the foregoing l have hereunto set my hand at Silver Creek in the county of Sheboygan and State of v\,"Visconsin. Y

es an EWALD ECHEUNEBT.

leeV 

